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File:Portrait of John Langdon Down (c 1870) by Sydney Hodges.jpg
来自维基百科,自由的百科全书
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File:Portrait of John Langdon Down (c 1870) by Sydney Hodges.jpg
Description
Portrait
of
John
Langdon
Down
(
c
1870
)
by
Sydney
Hodges
.
jpg
John
Langdon
Down
Date First published ca.
1870
Source St. George's University
of
London